Autopots and Canna Coco nutrient line(?) and other advice needed...

Hello all, I’ve been growing for 3 years all with coco doing DTW. The last 2 cycles got moved to my two best friends house because can’t grow where I’m at now. The wife does the majority of the feeding because I can only get over there once, maybe twice a week. she’s screwed up multiple times and I know she skips feedings so I’ve decided to buy an autopot system since it seems like the easiest hydro system and I can still use up the coco I have. So here are my questions:

1. I just switched to Canna Coco nutes my last grow and I have all the additives. Will this be fine in the autopot system as far as keeping the ph in the reservoir stable with little clogging issues? I was wondering if I should switch to the Canna Hydro or Canna Aero line of nutes while still using some of the additives I have? I also have 3 part GH Flora from previous DTW grows. Basically will the Canna Coco line work well without having to be too much hands on?

2. I was hoping to get through a 2-3 week veg cycle and flushing the reservoir before flower. When adding the pk13/14 would I need to flush the reservoir after the week it’s been fed that or can you let whatever remains stay in the Rez? I’ve read some people flush the Rez every week and some let it go for 3-4 weeks with just topping off.

ive learned so much from this site! Sorry if these are dumb questions. If I was still able to grow at my house I would prolly be switching to an ebb-n-flow or a RDWC, but I need things to be easy for my grow-op co-op peeps so autopots it is!

Happy growing friends!

3. I need to have a pump with an aerator in the reservoir too right? I’ve read that messes up PH Though. I’ve read people talking about putting a submergible pump in the water to keep it moving to prevent gunk buildup, but don’t the plants need aerated water? I wasn’t going to get the airdomes since most people seem to agree they don’t really help, but would they make sense? We can deal with watching ph levels closely if we have to.

sorry it’s late and I’ve been ripping dabs hope this all makes sense. Haha. Cheers all

edit: the general consensus seems to be no air stones in the reservoir but to use a small submerged pump to move water around on a timer.